Index: openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl,v
diff -u -N -r1.3 -r1.4
--- openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	5 Aug 2006 20:55:02 -0000	1.3
+++ openacs-4/packages/xowiki/tcl/xowiki-www-procs.tcl	5 Aug 2006 23:02:01 -0000	1.4
@@ -224,7 +224,8 @@
     my instvar text mime_type package_id item_id revision_id
     $package_id set mime_type $mime_type
     $package_id set delivery \
-	  [expr {[my isobject bgdelivery] ? "ad_returnfile_background" : "ns_returnfile"}] 
+	  [expr {[catch {ns_conn contentsentlength}] ? 
+		 "ns_returnfile" : "ad_returnfile_background"}]
     #my log "--F FILE=[my full_file_name]"
     return [my full_file_name]
   }